油田开发中声波阻抗界面反射系数的变化规律
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摘要
利用公式推导和模型模拟方法,对油层界面的反射系数与油层声波阻抗之间的函数关系进行研究,得出油层声波阻抗变化决定的时移地震的差异振幅和差异波形特征。结果表明:油层的声波阻抗增大,该界面对应的地震反射系数增大,反之,地震反射系数减小;油层声波阻抗变化趋势(增大或减小)决定差异波形振幅幅度变化的快慢,油层声波阻抗减小比同等数值声波阻抗增大导致差异波形振幅幅度大。实际资料的处理结果验证了上述结论的可靠性。
Through formula deduction and model simulation,the certain function relationship was researched between the seismic reflection coefficient and acoustic impedance change of oil layer.The results show that the amplitude and waveform characters of difference seismic depend on the oil layer acoustic impedance change.If the oil layer acoustic impedance increases,the seismic reflection coefficient of the oil layer boundary increases.Conversely,the seismic reflection coefficient decreases.The tendency of oil layer acoustic impedance controls the velocity of seismic reflection waveform amplitude variation.The amplitude of differential seismic waveform caused by acoustic impedance decrease is greater than the one caused by equivalent acoustic impedance increase.The production data research results verify the reliability of the conclusions.
Through formula deduction and model simulation,the certain function relationship was researched between the seismic reflection coefficient and acoustic impedance change of oil layer.The results show that the amplitude and waveform characters of difference seismic depend on the oil layer acoustic impedance change.If the oil layer acoustic impedance increases,the seismic reflection coefficient of the oil layer boundary increases.Conversely,the seismic reflection coefficient decreases.The tendency of oil layer acoustic impedance controls the velocity of seismic reflection waveform amplitude variation.The amplitude of differential seismic waveform caused by acoustic impedance decrease is greater than the one caused by equivalent acoustic impedance increase.The production data research results verify the reliability of the conclusions.
引文
[1]KING G.4-D seismic improves reservoir management deci-sions:part-1[J].World Oil,1996,217(3):75-80.
[2]KINGS G.4-D seismic improves reservoir management deci-sions:part-2[J].World Oil,1996,217(4):79-86.
[3]ANDERSON R N,BOULANGER A,HE W,et al.Gulf ofmexico reservoir management(part-1):4D seismic helpstrack drainage,pressure compartmentalization[J].Oil GasJ,1995,93(13):55-58.
[4]ANDERSON R N,BOULANGER A,HE W,et al.Gulf ofmexico reservoir management(part-2):method described forusing 4D seismic to track reservoir fluid movement[J].OilGas J,1995,93(14):70-74.
[5]ANDERSONR N,BOULANGER A,HE W,et al.4D seis-mic,the fourth dimension in reservoir management,part-1:what is 4-D and how dose it improve recovery efficiency?[J]World Oil,1997,218(3):43-48.
[6]ANDERSONR N,BOULANGER A,HE W,et al.4-D seis-mic,the fourth dimension in reservoir management,part-2:why 4-D now?the information technology revolution haschanged the way we do business[J].World Oil,1997,218(4):69-76.
[7]XU L Q,ANDERSON R N,BOULANGER A,et al.4-Dseismic,the fourth dimension in reservoir management,part-3:4-D reservoir monitoring,the business driver[J].WorldOil,1997,218(6):133-139.
[8]HE W,ANDERSONR N,BOULANGER A,et al.4-D seis-mic,the fourth dimension in reservoir management,part-4:inversion of 4-D seismic changes to find bypassed pay[J].World Oil,1997,218(7):109-115.
[9]GUERIN G,HE W,ANDERSON R N,et al.4-D seismic,the fourth dimension in reservoir management,part-5:reser-voir simulation as a tool to validate and constrain4-D seismicanalysis[J].World Oil,1997,218(9):75-79.
[10]TENG Y C,ANDERSON R N,BOULANGER A,et al.4-D seismic,the fourth dimension in reservoir manage-ment,part-6:4-D seismic reservoir simulation[J].WorldOil,1997,218(10):113-121.
[11]WANG Z.Feasibility of TL seismic reservoir monitoring[J].The Leading Edge,1997,16(9):1327-1329.
[12]HAN D,BATZLE M.Gassmann s equation and fluid-sat-uration effects on seismic velocities[J].Geophysics,2004,69(2):398-405.
[13]云美厚,张国才,付雷,等.重复性噪声对实施4D地震监测的影响[J].勘探地球物理进展,2003,26(1):13-18.YUN Mei-hou,ZHANG Guo-cai,FU Lei,et al.Effectsof repeatabil ity noises on 4-D seismic monitoring[J].Progress in Exploration Geophysics,2003,26(1):13-18.
[14]金龙,陈小宏.时移地震非一致性影响研究与互均衡效果验证[J].勘探地球物理进展,2003,26(1):45-48.JIN Long,CHEN Xiao-hong.Effects of time-lapse seis-mic non-repeatabil ity and verification of cross-equaliza-tion processing[J].Progress in Exploration Geophysics,2003,26(1):45-48.
[15]JENKINS S D,WAITE MW,BEE MF.Time-lapse mo-nitoring of the Duri steamflood:a pilot and case study[J].The Leading Edge,1997,16(9):1267-1274.
[16]陈小宏.四维地震归一化方法及实例处理[J].石油学报,1999,20(6):22-26.CHEN Xiao-hong.Normalization for four-dimensionalseismic data and its application to real data[J].Acta Pe-trolei Sinica,1999,20(6):22-26.
[2]KINGS G.4-D seismic improves reservoir management deci-sions:part-2[J].World Oil,1996,217(4):79-86.
[3]ANDERSON R N,BOULANGER A,HE W,et al.Gulf ofmexico reservoir management(part-1):4D seismic helpstrack drainage,pressure compartmentalization[J].Oil GasJ,1995,93(13):55-58.
[4]ANDERSON R N,BOULANGER A,HE W,et al.Gulf ofmexico reservoir management(part-2):method described forusing 4D seismic to track reservoir fluid movement[J].OilGas J,1995,93(14):70-74.
[5]ANDERSONR N,BOULANGER A,HE W,et al.4D seis-mic,the fourth dimension in reservoir management,part-1:what is 4-D and how dose it improve recovery efficiency?[J]World Oil,1997,218(3):43-48.
[6]ANDERSONR N,BOULANGER A,HE W,et al.4-D seis-mic,the fourth dimension in reservoir management,part-2:why 4-D now?the information technology revolution haschanged the way we do business[J].World Oil,1997,218(4):69-76.
[7]XU L Q,ANDERSON R N,BOULANGER A,et al.4-Dseismic,the fourth dimension in reservoir management,part-3:4-D reservoir monitoring,the business driver[J].WorldOil,1997,218(6):133-139.
[8]HE W,ANDERSONR N,BOULANGER A,et al.4-D seis-mic,the fourth dimension in reservoir management,part-4:inversion of 4-D seismic changes to find bypassed pay[J].World Oil,1997,218(7):109-115.
[9]GUERIN G,HE W,ANDERSON R N,et al.4-D seismic,the fourth dimension in reservoir management,part-5:reser-voir simulation as a tool to validate and constrain4-D seismicanalysis[J].World Oil,1997,218(9):75-79.
[10]TENG Y C,ANDERSON R N,BOULANGER A,et al.4-D seismic,the fourth dimension in reservoir manage-ment,part-6:4-D seismic reservoir simulation[J].WorldOil,1997,218(10):113-121.
[11]WANG Z.Feasibility of TL seismic reservoir monitoring[J].The Leading Edge,1997,16(9):1327-1329.
[12]HAN D,BATZLE M.Gassmann s equation and fluid-sat-uration effects on seismic velocities[J].Geophysics,2004,69(2):398-405.
[13]云美厚,张国才,付雷,等.重复性噪声对实施4D地震监测的影响[J].勘探地球物理进展,2003,26(1):13-18.YUN Mei-hou,ZHANG Guo-cai,FU Lei,et al.Effectsof repeatabil ity noises on 4-D seismic monitoring[J].Progress in Exploration Geophysics,2003,26(1):13-18.
[14]金龙,陈小宏.时移地震非一致性影响研究与互均衡效果验证[J].勘探地球物理进展,2003,26(1):45-48.JIN Long,CHEN Xiao-hong.Effects of time-lapse seis-mic non-repeatabil ity and verification of cross-equaliza-tion processing[J].Progress in Exploration Geophysics,2003,26(1):45-48.
[15]JENKINS S D,WAITE MW,BEE MF.Time-lapse mo-nitoring of the Duri steamflood:a pilot and case study[J].The Leading Edge,1997,16(9):1267-1274.
[16]陈小宏.四维地震归一化方法及实例处理[J].石油学报,1999,20(6):22-26.CHEN Xiao-hong.Normalization for four-dimensionalseismic data and its application to real data[J].Acta Pe-trolei Sinica,1999,20(6):22-26.
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